@misc{indiciae655329843e5e,
  title = {Problems associated with biological age.},
  author = {W Ries},
  year = {1974},
  doi = {10.1016/0531-5565(74)90044-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/4153845/},
  note = {Source identifier: 4153845}
}